<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="文件名" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入文件名"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="url路径" prop="path">
        <el-input
          v-model="queryParams.path"
          placeholder="请输入url路径"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:minioFile:add']"
        >新增
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:minioFile:edit']"
        >修改
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:minioFile:remove']"
        >删除
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:minioFile:export']"
        >导出
        </el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="minioFileList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center"/>
      <el-table-column label="id" align="center" prop="id"/>
      <el-table-column label="文件名" align="center" prop="name"/>
      <el-table-column label="图片" align="center" prop="path">
        <template slot-scope="scope">
          <img width="20%" :src="scope.row.path"/>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:file:edit']"
          >查看
          </el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:file:remove']"
          >删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改minio上传文件对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="文件路径" prop="fileUrl">
          <el-upload
            ref="upload"
            v-model="dialogImageUrl"
            list-type="picture-card"
            class="uploadFile"
            :http-request="uploadFileReq"
            action
            accept=".png,.jpg,.bmp"
            :on-preview="handlePreview"
            :on-change="handleChange"
            :on-remove="handleRemove"
            :file-list="fileList"
            :limit="fileLimit"
            :on-exceed="handleExceed"
            :on-error="handleError"
            :on-success="handleSuccess"
            :show-file-list="true"
          >
            <i class="el-icon-plus"/>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <el-dialog :visible.sync="dialogVisible" z-index="100" width="50%">
      <img width="100%" height="50%" :src="dialogImageUrl" alt="">
    </el-dialog>
  </div>
</template>

<script>
  import { addMinioFile, delMinioFile, getMinioFile, listMinioFile, updateMinioFile, uploadFile } from '@/api/system/minioFile'

  export default {
    name: 'MinioFile',
    data() {
      return {
        // 遮罩层
        loading: true,
        // 选中数组
        ids: [],
        // 非单个禁用
        single: true,
        // 非多个禁用
        multiple: true,
        // 显示搜索条件
        showSearch: true,
        // 总条数
        total: 0,
        // minio上传的文件表格数据
        minioFileList: [],
        // 弹出层标题
        title: '',
        // 是否显示弹出层
        open: false,
        // 查询参数
        queryParams: {
          pageNum: 1,
          pageSize: 10,
          name: null,
          path: null
        },
        // minio上传文件表格数据
        fileList: [],
        // 图片数量限制
        fileLimit: 1,
        // 上传图片
        dialogVisible: false,
        dialogImageUrl: '',
        fileType: ['png', 'jpg', 'bmp'],
        imgObj: '',
        // 表单参数
        form: {},
        // 表单校验
        rules: {}
      }
    },
    created() {
      this.getList()
    },
    methods: {
      /** 查询minio上传的文件列表 */
      getList() {
        this.loading = true
        listMinioFile(this.queryParams).then(response => {
          this.minioFileList = response.rows
          this.total = response.total
          this.loading = false
        })
      },
      // 取消按钮
      cancel() {
        this.open = false
        this.reset()
      },
      // 表单重置
      reset() {
        this.form = {
          id: null,
          name: null,
          path: null,
          createTime: null
        }
        this.dialogImageUrl = ''
        this.fileList = []
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNum = 1
        this.getList()
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.resetForm('queryForm')
        this.handleQuery()
      },
      // 多选框选中数据
      handleSelectionChange(selection) {
        this.ids = selection.map(item => item.id)
        this.single = selection.length !== 1
        this.multiple = !selection.length
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.reset()
        this.open = true
        this.title = '添加minio上传的文件'
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.reset()
        const id = row.id || this.ids
        getMinioFile(id).then(response => {
          this.form = response.data
          this.open = true
          this.title = '修改minio上传的文件'
        })
      },
      /** 提交按钮 */
      submitForm() {
        this.$refs['form'].validate(valid => {
          if (valid) {
            if (this.form.id != null) {
              updateMinioFile(this.form).then(response => {
                this.$modal.msgSuccess('修改成功')
                this.open = false
                this.getList()
              })
            } else {
              addMinioFile(this.form).then(response => {
                this.$modal.msgSuccess('新增成功')
                this.open = false
                this.getList()
              })
            }
          }
        })
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        const ids = row.id || this.ids
        this.$modal.confirm('是否确认删除minio上传的文件编号为"' + ids + '"的数据项？').then(function() {
          return delMinioFile(ids)
        }).then(() => {
          this.getList()
          this.$modal.msgSuccess('删除成功')
        }).catch(() => {
        })
      },
      /** 导出按钮操作 */
      handleExport() {
        this.download('system/minioFile/export', {
          ...this.queryParams
        }, `minioFile_${new Date().getTime()}.xlsx`)
      },
      uploadFileReq(item) {
        const formData = new FormData()
        formData.append('file', this.fileList[0].raw)
        return uploadFile(formData).then(res => {
          this.$message.success('上传成功')
          this.cancel()
          this.getList()
        })
      },
      handlePreview(file) {
        this.dialogImageUrl = file.url
        this.dialogVisible = true
      },
      handleChange(file, fileList) {
        // 截取文件的后缀，判断文件类型
        const FileExt = file.name.replace(/.+\./, '').toLowerCase()
        let flag = false
        // 如果文件类型不在允许上传的范围内
        if (this.fileType.includes(FileExt)) {
          flag = true
        } else {
          this.$message.error('上传的文件格式不正确!')
          fileList.pop()
        }
        if (flag) {
          this.fileList = fileList
        }
      },
      handleRemove(file, fileList) {
        if (this.fileList.length > 0) {
          const idx = this.fileList.findIndex(item => item.response.data.id == file.response.data.id)
          this.fileList.splice(idx, 1)
        }
      },
      // 超出文件个数的回调
      handleExceed() {
        this.$message({
          type: 'warning',
          message: '超出最大上传文件数量的限制！'
        }); return
      },
      // 上传失败文件
      handleError(res, file, fileList) {
        if (res) {
          this.fileList = []
          this.$message.error('文件上传失败, 请重新上传！')
        }
      },
      // 上传成功回调
      handleSuccess(res, file, fileList) {
        this.dialogImageUrl = URL.createObjectURL(file.raw)
        this.fileList = []
        if (res.code === 200) {
          this.fileList.push(res.data)
          this.imgObj = res.data
        }
      }
    }
  }
</script>
